Inventor · disambiguated record
Tamotsu Kotani
Also filed as: KOTANI TAMOTSU
5 granted patents·29 citations·filing 1976–2015
73Inventor score
Top patents by PatentIndex Score
5 records- 0170US4107508AMethod and apparatus for welding using fillet-wireAIR LIQUIDE·Filed 1976·Granted Aug 15, 1978·24 cites·11 claims
- 0261US8974575B2Method of enriching combustible gasUTAKI TAKAHISA·Filed 2011·Granted Mar 10, 2015·2 cites·2 claims
- 0359US8940081B2Combustible gas enrichment apparatusUTAKI TAKAHISA·Filed 2011·Granted Jan 27, 2015·2 cites·6 claims
- 0439US10124287B2Gas concentration methodOSAKA GAS CO LTD·Filed 2015·Granted Nov 13, 2018·0 cites·6 claims
- 0525US4039802AMethod of automatic or semi-automatic welding with gasesAIR LIQUIDE·Filed 1976·Granted Aug 2, 1977·1 cites·4 claims
Join the waitlist — get patent alerts
Get an alert when Tamotsu Kotani files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →